When last we saw [xoreaxeax], he had built a lens-less optical microscope that deduced the structure of a sample by recording the diffraction patterns formed by shining a laser beam through it. At the ...

Create a self-updating Excel checklist with checkboxes, IFS due-date priority, and a progress data bar for faster tracking.

Paint sprayers require more of a learning curve than a paint roller and tray, but their speed and efficiency are well worth the time you invest to practice. With a specialized nozzle that transforms ...